So today we go like an inch of snow and super icy roads. I was driving in 2wd for a while then decided as I was headed home that I would put it in 4wd for some much needed added traction. When I went to pull it into 4h ( like I always do, driving less than 50mph and more than .1 mph ) it was a little tough to pull. Now it did end up going in but a few hundred feet down the road.... Thump! I let off the gas and turn onto a side road so I can take it out of 4h and stop and well it didn't want to push into 2wd. So I dive a few feet trying to push it back into 2wd and it finally did. So I stopped put it in reverse to pop it all the way out of 4wd and was on my way. So my concern is well why did this happen? What was the thump I heard? Was it just popping out of 4h? There was no grinding or another noise besides the thump. And after the thump it still acted like it was in 4h because when I made my turn onto the side road it bounced a little (hit some clean pavement). Could this be because I was on clean pavement when I pulled it into 4h ( don't think I was it was pretty icy but could have been on a dry spot ). My next question might be a little dumb but is it normal for it to pop out of 4h with a thump and act like It is still in, and also does the lever pop out as well because mine did not. If anything is unclear ask and I'll try and clear it up, And thanks ahead of time for any info.